Release MIDI Tools 0.2.0

tests/core/midi.test.ts

@@ -2,8 +2,10 @@ import { describe, expect, it } from "vitest";
 import {
   constantTempoMidi,
   cropMidi,
+  deleteNote,
   dropChannel,
   encodeMidi,
+  editNote,
   exportMidiCsv,
   exportMidiJson,
   noteSpans,
@@ -262,4 +264,31 @@ describe("MIDI editing operations", () => {
       /outside MIDI/u,
     );
   });
+
+  it("edits and deletes one paired note without mutating its neighbours", () => {
+    const source = documentFixture();
+    const first = noteSpans(source)[0]!;
+    const edited = editNote(source, first.onOrder, {
+      note: 61,
+      velocity: 77,
+      startTick: 100,
+      endTick: 700,
+    });
+    expect(noteSpans(edited)[0]).toMatchObject({
+      note: 61,
+      velocity: 77,
+      startTick: 100,
+      endTick: 700,
+    });
+    expect(noteSpans(source)[0]?.note).toBe(60);
+    expect(noteSpans(deleteNote(edited, first.onOrder))).toHaveLength(1);
+    expect(() =>
+      editNote(source, first.onOrder, {
+        note: 60,
+        velocity: 100,
+        startTick: 20,
+        endTick: 20,
+      }),
+    ).toThrow(/after its start/u);
+  });
 });